NOSHOK 1900 Series Current Loop Powered Process Indicators Owner's manual

Brand: NOSHOK

Model: 1900 Series Current Loop Powered Process Indicators

Type: Owner's manual

·DUAL RANGE, 4 to 20 mA OR 10 to 50 mA

·3½-DIGIT, 0.6" (15.2 mm) HIGH DIGITS

·POSITIVE IMAGE TRANSFLECTIVE LCD WITH RED BACKLIGHT

OR POSITIVE IMAGE REFLECTIVE LCD (1900C-1/1900C-2)

·POSITIVE IMAGE TRANSFLECTIVE LCD WITH RED BACKLIGHT

OR NEGATIVE IMAGE TRANSMISSIVE WITH RED OR

YELLOW/GREEN BACKLIGHT (1900C-3/1900C-4)

·SPAN AND OFFSET CAPABILITY

·NEGATIVE AND OVERRANGE INDICATION

·SELECTABLE DECIMAL POINT POSITION

·NEMA 4X/IP65 SEALED FRONT PANEL BEZEL

·FITS DIN STANDARD CUT-OUT 2.68" (68 mm) X 1.30" (33 mm)

FOR USE IN HAZARDOUS LOCATIONS:

Class I, Division 2, Groups A, B, C, and D

Class II, Division 2, Groups F and G

Class III, Division 2

D ES C R IP T IO N

The 1900C-1/ 1900C-2 and 1900C-3/ 1900C-4 are additions to the NOSHOK

1900 Series product line. The 1900C-1/ 1900C-2 uses a 4 to 20 mA or a

10 to 50 mA input signal as operating power. The input signal is also used

backlighting

the

The

C. 3

/ 1

to power the backlighting on the 1900C-2 Unit. The 1900C-3/ 1900C-4 uses

a 4 to 20 mA or a 10 to 50 mA input signal to power the unit. An external

power supply is used to power the 1900C-3/ 1900C-4 backlighting to provide

a brighter, more consistent display and a lower compliance voltage.

The units have a 3½ -digit LCD display with 0.6" (15.2 mm) high digits and

a DIP switch selectable decimal point. The 1900C-1/ 1900C-2 display is

available in positive image reflective (dark digits, reflective background) or

positive image transflective (dark digits, illuminated background) with red

backlighting. The 1900C-3/ 1900C-4 display is available in positive image

transflective (dark digits, illuminated background) with red or yellow/green

backlighting or negative image transmissive (illuminated digits, dark

background) with red or yellow/green backlighting.

The ability to scale the display allows indication in any desired unit of

measurement such as temperature, pressure, humidity, fluid flow, etc. The unit

is calibrated at the factory with 0.0 displayed @ 4 mA input and 100.0 displayed

@ 20 mA input.

The units are contained in a lightweight, high impact plastic case with a clear

viewing window. When properly installed, the sealed front panel meets NEMA

4X/IP65 specifications for wash-down and dusty environments.

S A F ET Y S U M M A R Y

All safety related regulations, local codes and instructions that appear in the

manual or on equipment must be observed to ensure personal safety and to

prevent damage to either the instrument or equipment connected to it. If

equipment is used in a manner not specified by the manufacturer, the protection

provided by the equipment may be impaired.

WARNING - EXPLOSION HAZARD - SUBSTITUTION

OF COMPONENTS MAY IMPAIR SUITABILITY FOR

CLASS I, DIV ISION 2 / CLASS II, DIV ISION 2 / CLASS III, DIV ISION 2

S P EC IF IC A T IO N S

1. DISPLAY: 3½ -digit (-1999 to 1999), 0.6" (15.2 mm) high digits.

The 1900C-1/ 1900C-2 is available with a positive image reflective LCD

or a red backlit positive image transflective LCD. The intensity of the

backlighting will vary with the input signal.

The 1900C-3/ 1900C-4 is available with a positive image transflective LCD

with red or yellow/green backlighting or a negative image transmissive with

red or yellow/green backlight.

A minus sign is displayed when the indicator is adjusted for a negative offset.

Ove rrange: Overrange is indicated by a “ 1” in the most significant digit and

the blanking of the three least significant digits.

2. EXTERNAL BACK LIGHT POWER: (1900C-3/ 1900C-4 only)

9 - 28 V dc, @35 mA typ., 50 mA max. Power Supplies must be Class 2

(NEC) or SELV rated. Above 26 V dc, derate the operating temperature to

50° C.

3. DECIMAL POINTS: Three DIP switch selectable, decimal point positions

allow the display to be read in tenths, hundredths or thousandths.

M OD ELS 1 9 0 0 C- 1 / 1 9 0 0 C- 2 / 1 9 0 0 C- 3 / 1 9 0 0 C- 4 - CU R R ENT LOOP POW ER ED PR OCESS IND ICATOR S

D IM EN S IO N S “ In inc h es ( mm) ” No t e : Re co m m e n d e d m i n i m u m cl e a r a n ce ( b e h i n d t h e p a n e l ) f o r

m o u n t i n g cl i p i n st a l l a t i o n i s 2 .15 " ( 5 4 .6 ) H x 3 .00" ( 7 6 .2 ) W.

NOSH O K

1900

SERIES

TECHNICAL M ANUAL

1010 WEST BAGLEY ROAD

BEREA, OHIO 4 4 017

E-MAIL: n o sh o k@ n o sh o k. co m

WEBSITE: w w w .n o sh o k. co m

FAX 4 4 0/ 2 4 3 -3 4 7 2

PHONE 4 4 0/ 2 4 3 -08 8 8

CURRENT LOOP POWERED PROCESS INDICATORS

INSTALLATION

When properly installed, the 1900C unit

meets NEMA 4X/IP65 requirements for indoor

use. The units are intended to be mounted into an

enclosed panel. A sponge rubber gasket, mounting

clip, two screws, and nut fasteners are provided to

install and seal the unit in the panel cutout.

Installation Environment

The unit should be installed in a location that

does not exceed the maximum operating

temperature and provides good air circulation.

Placing the unit near devices that generate

excessive heat should be avoided.

The bezel should be cleaned only with a soft

cloth and neutral soap product. Do NOT use

solvents.

Continuous exposure to direct sunlight may

accelerate the aging process of the bezel.

The following procedure assures proper installation:

1. Cut the panel opening to the specified dimensions.

Remove burrs and clean the panel opening.

2. Slide nut fastener into slot on mounting clip and then

insert mounting screw through nut on both sides of

mounting clip. The tip of mounting screw should not project

through hole on clip.

3. Slide the panel gasket over the rear of the unit to the back of the

bezel. Install 1900C unit through panel cutout.

4. Slide mounting clip over rear of unit until the clip is against back of

panel. The mounting clip and 1900C housing have a latching feature

to hold the unit in place until tightened.

Note: Hold the 1900C front bezel in place when sliding the mounting

clip into position.

5. Alternately tighten each mounting screw to ensure uniform gasket pressure.

Visually inspect the gasket for proper seal. The gasket should be

compressed to approximately 75 to 80% of its original thickness.

(Recommended torque is 28 to 36 in-oz.)

6. If the gasket is not adequately compressed and the mounting screws cannot

be tightened any further, loosen the mounting screws and insure that the clip

is latched as closely as possible to the panel.

7. Repeat Step #6 for tightening the mounting screws.

SPECIFICATIONS (Cont’d)

4. MAXIMUM VOLTAGE DROP:

3.2 V dc for 1900C-1

4.0 V dc for 1900C-2

3.2 V dc for 1900C-3 & 1900C-4

5. EQUIVALENT RESISTANCE:

1900C-1: 800 max. @ 4 mA; 160 max. @ 20 mA

320 max. @ 10 mA; 65 max. @ 50 mA

1900C-2: 1000 max. @ 4 mA; 200 max. @ 20 mA

400 max. @ 10 mA; 80 max. @ 50 mA

: 800 max. @ 4 mA; 160 max. @ 20 mA

320 max. @ 10 mA; 65 max. @ 50 mA

6. MAXIMUM ALLOWABLE INPUT CURRENT: 100 mA

7. SCALING RANGE:

Span: Two potentiometers provide a coarse and fine span adjustment. Span

range = 0 to 2000.

Offset: Two potentiometers provide a coarse and fine zero offset adjustment.

Offset range = -1999 to 1999.

8. LINEARITY: (@ 23°C, Less than 85% RH) ±(0.1% + 1 digit).

9. READING RATE: 2.5 per second, nominal.

10. RESPONSE TIME: 1.5 seconds to settle for a step change.

11. NORMAL MODE REJECTION: 60 dB 50/60 Hz

12. TEMPERATURE EFFECTS:

Span Temperature Coefficient: 100 PPM/°C

Offset Temperature Coefficient: 0.2 digits/°C

13. CONSTRUCTION: High impact plastic case with clear viewing window.

(Panel gasket and mounting clips included.) This unit is rated for NEMA

4X/IP65 indoor use. Installation Category I, Pollution Degree 2

14. CERTIFICATIONS AND COMPLIANCES:

UL Listed

LISTED by Und. Lab. Inc. to U.S. and Canadian safety standards, for use

in Hazardous Locations.

ELECTRICAL SAFETY

EN 61010-1, IEC 1010-1

Safety Requirements for electrical equipment for measurement,

control, and laboratory use, Part I.

ELECTROMAGNETIC COMPATIBILITY

Notes:

1. Self-recoverable loss of performance during EMI disturbance at 10 V/m:

Process Signal may deviate during EMI disturbance.

For operation without loss of performance:

Unit is mounted in a metal enclosure (Buckeye SM7013-0 or

equivalent) connected to earth ground.

2. Self-recoverable loss of performance during EMI disturbance at 10 Vrms.

Process signal may deviate during EMI disturbance.

For operation without loss of performance:

Install 1 ferrite core or equivalent, to signal cable at

the unit.

Refer to the EMC Installation Guidelines of this bulletin for additional

information.

15. ENVIRONMENTAL CONDITIONS:

Operating Temperature: 0°to 60°C

(Derate backlight voltage to 26 V dc above 50 °C.)

Storage Temperature: -40°to 80°C

Operating and Storage Humidity: 85% max. (non-condensing) from 0°C

to 60°C.

Altitude: Up to 2000 meters

16. WEIGHT: 3.3 oz. (93.5 g)

Power mains class B

Enclosure class BEN 55011RF interference

Emissions to EN 50081-1

Level 4; 30 A/mEN 61000-4-8Power frequency magnetic fields

150 kHz - 80 MHz

Level 3; 10 V/rms2

EN 61000-4-6RF conducted interference

Level 3; 2 kV power

Level 4; 2 kV I/OEN 61000-4-4Fast transients (burst)

80 MHz - 1 GHz

Level 3; 10 V/m1

EN 61000-4-3Electromagnetic RF fields

Level 3; 8 kV air

Level 2; 4 kV contactEN 61000-4-2Electrostatic discharge

Immunity to EN 50082-2

1900C-3 & 1900C-4

WIRING CONNECTIONS

All conductors should meet voltage and current ratings for

each terminal. Also cabling should conform to appropriate

standards of good installation, local codes and regulations. It is

recommended that power supplied to the unit (ac or dc) be

protected by a fuse or circuit breaker.

The electrical connections are made via screw-clamp

terminals located on the back of the unit. When wiring the unit,

use the label to identify the wire position with the proper

function. Strip the wire, leaving approximately ¼" of bare wire

(stranded wires should be tinned with solder). Insert the wire

into the screw-clamp terminal and tighten the screw until the

wire is clamped tightly. Each terminal can accept up to two #14

AWG wires.

EMC INSTALLATION GUIDELINES

Although this unit is designed with a high degree of immunity to

ElectroMagnetic Interference (EMI), proper installation and wiring methods

must be followed to ensure compatibility in each application. The type of the

electrical noise, source or coupling method into the unit may be different for

various installations. Cable length, routing and shield termination are very

important and can mean the difference between a successful installation or a

troublesome installation. Listed below are some EMC guidelines for successful

installation in an industrial environment.

1. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail connection should be made as short as possible. The

connection point for the shield depends somewhat upon the application.

Listed below are the recommended methods of connecting the shield, in order

of their effectiveness.

a. Connect the shield only at the panel where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

2. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be run in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are long

and portable two-way radios are used in close proximity or if the installation

is near a commercial radio transmitter.

3. Signal or control cables within an enclosure should be routed as far away as

possible from contactors, control relays, transformers, and other noisy

components.

4. In extremely high EMI environments, the use of external EMI suppression

devices, such as ferrite suppression cores, is effective. Install them on Signal

and Control cables as close to the unit as possible. Loop the cable through the

core several times or use multiple cores on each cable for additional

protection. Install line filters on the power input cable to the unit to suppress

power line interference. Install them near the power entry point of the

enclosure. The following EMI suppression devices (or equivalent) are

recommended:

Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251

TDK # ZCAT3035-1330A

Steward #28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07

Schaffner # FN670-1.8/07

Corcom #1VR3

Note: Reference manufacturer’s instructions when installing a line filter.

5. Long cable runs are more susceptible to EMI pickup than short cable runs.

Therefore, keep cable runs as short as possible.

1900C SIGNAL INPUT

The current range is selected by setting DIP switch S1 to the OFF position

for a 4 mA to 20 mA input or ON for a 10 mA to 50 mA input. Attach the signal

wires to terminals 3 (SIG-) and 4 (SIG+) observing the correct polarity.

The (SIG-) signal input circuit is not reverse polarity protected.

Backlight Power (1900C-3/1900C-4 only)

Attach a 9 mA to 28 V dc supply to terminals 1 (COM) and 2 (V+) to power

the backlight. Terminals 3 (SIG-) and 1 (COM) are ac coupled with a capacitor.

This limits the isolation between these terminals to 50 V dc maximum.

OFFSET ADJUSTMENTS

The minimum currents are not zero based with 4 mA to 20 mA and 10 mA to

50 mA signals. To obtain a zero minimum display reading, the display must be

offset. The display on the 1900C can be offset by adjusting the Coarse and Fine

Offset pots.

SPAN ADJUSTMENTS

Span is defined as the numerical range that the display traverses, disregarding

the decimal point, when the input signal is varied from minimum to maximum

(4 mA to 20 mA or 10 mA to 50 mA). For example; if a unit is to display 250

@ 4 mA and 1000 @ 20 mA, the span is 750 (the difference between 250 and 1000).

Had the minimum display been -250, the span would be 1250 (1000 - (-250) = 1250).

The 1900C unit can be set to operate over a wide span range by adjusting the

Coarse and Fine Span adjustment pots. The Coarse Span pot is used to get the

display to within a couple of counts of the desired reading, and the Fine Span

pot is used to adjust for the exact reading.

WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT

EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF

OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.

1900C

NOSHOK 1900 Series Current Loop Powered Process Indicators Owner's manual

Brand: NOSHOK

Model: 1900 Series Current Loop Powered Process Indicators

Type: Owner's manual

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NOSHOK 1900 Series Current Loop Powered Process Indicators Owner's manual

NOSHOK 1900 Series Current Loop Powered Process Indicators Owner's manual

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